#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int my_strlen(char* arr)
{
	if (*arr == 0 || arr == NULL)
	{
		return 0;
	}
	else
	{
		return 1 + my_strlen(arr + 1);
	}
}
int main()
{
	char arr[] = "azczxc";
	int n = my_strlen(arr);
	printf("%d", n);
	return 0;
}